Savegame not able to open

Today I got an update to ver. 1.11. I load my savegame and the game as at the beginning a little bit laggy. After 2-3 Mins it got much better. During building a tunnel the game crashed and i got "Die Welt ist fehlerhaft. Melde bitte diesen Fehler auf bugs.majong.com". Ok. Here i am.

I tried many times to open that savegame but it does not work. I do not use any add ons.

I know that my discripion isnt good but maybe the log-file helps.